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Diffstat (limited to 'Utilities/cmcurl/lib/mqtt.h')
| -rw-r--r-- | Utilities/cmcurl/lib/mqtt.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/Utilities/cmcurl/lib/mqtt.h b/Utilities/cmcurl/lib/mqtt.h new file mode 100644 index 0000000000..37463d58ad --- /dev/null +++ b/Utilities/cmcurl/lib/mqtt.h @@ -0,0 +1,59 @@ +#ifndef HEADER_CURL_MQTT_H +#define HEADER_CURL_MQTT_H +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 2019 - 2020, Björn Stenberg, <bjorn@haxx.se> + * + * This software is licensed as described in the file COPYING, which + * you should have received as part of this distribution. The terms + * are also available at https://curl.haxx.se/docs/copyright.html. + * + * You may opt to use, copy, modify, merge, publish, distribute and/or sell + * copies of the Software, and permit persons to whom the Software is + * furnished to do so, under the terms of the COPYING file. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ***************************************************************************/ + +#ifdef CURL_ENABLE_MQTT +extern const struct Curl_handler Curl_handler_mqtt; +#endif + +enum mqttstate { + MQTT_FIRST, /* 0 */ + MQTT_REMAINING_LENGTH, /* 1 */ + MQTT_CONNACK, /* 2 */ + MQTT_SUBACK, /* 3 */ + MQTT_SUBACK_COMING, /* 4 - the SUBACK remainder */ + MQTT_PUBWAIT, /* 5 - wait for publish */ + MQTT_PUB_REMAIN, /* 6 - wait for the remainder of the publish */ + + MQTT_NOSTATE /* 7 - never used an actual state */ +}; + +struct mqtt_conn { + enum mqttstate state; + enum mqttstate nextstate; /* switch to this after remaining length is + done */ + unsigned int packetid; +}; + +/* protocol-specific transfer-related data */ +struct MQTT { + char *sendleftovers; + size_t nsend; /* size of sendleftovers */ + + /* when receiving */ + size_t npacket; /* byte counter */ + unsigned char firstbyte; + size_t remaining_length; +}; + +#endif /* HEADER_CURL_MQTT_H */ |